# Mount Ridley trumpets world’s largest scandium resource Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/mount-ridley-trumpets-world-s-largest-scandium-resource--4ead7024-b384-4c0a-8da1-57380fc378fd Original source: https://stockhead.com.au/resources/mount-ridley-trumpets-worlds-largest-scandium-resource/ Publisher: stockhead Original announcement: 2026-08-26T00:18:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Mount Ridley Mines - Ticker: MRD - Exchange: Unavailable - Region: Western Australia - Primary commodity: Scandium - Secondary commodities: Rare earths, Gallium - Document categories: Resource update, Metallurgy - Extracted: 2026-08-26 01:02:34 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary Mount Ridley Mines has expanded its Grass Patch scandium resource to 946Mt at 50.1ppm, representing a significant increase in scale. The company is also developing a proprietary 'Selectro' hydrometallurgical process which showed 80% scandium recovery in initial laboratory testing. Reasoning: The announcement reports a massive expansion of the scandium resource \(946Mt\) and introduces promising preliminary metallurgical results, though the resource remains in the speculative Inferred category. - Positive factor: Significant tonnage growth \(>2.5x\) - Positive factor: World-scale scandium resource - Positive factor: Proprietary processing technology \(Selectro\) - Positive factor: Co-location of multiple critical minerals - Negative factor: Resource is entirely Inferred category - Negative factor: Metallurgical recovery is based on small-scale historical composite - Negative factor: Commercial pathway for Selectro process is unproven at scale Facts used in scoring: 4 ## Classification and evidence **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: The entire 946Mt scandium resource is classified as Inferred. Evidence · text > lifted its inferred scandium mineral resource estimate to 946Mt **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: The resource is stated to be JORC-compliant. Evidence · text > world’s largest publicly reported JORC-compliant scandium resource ## Extracted facts Stored fact records: 4. Some facts used in scoring do not have a stored record. ## Resource Estimates (4) ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/mount-ridley-trumpets-world-s-largest-scandium-resource--4ead7024-b384-4c0a-8da1-57380fc378fd#fact-resource-facts-0) Grass Patch · scandium #### Identity - Project: Grass Patch - Commodity: scandium - Ticker: MRD #### Resource Data - Category: inferred - Tonnes: 946000000 - Grade: 50.1 - Grade Unit: ppm - Contained Metal: 47357 - Contained Unit: t - Cutoff Grade: 25 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-08-26T00:00:00.000Z Reasoning: The resource represents a massive scale-up in tonnage and is a world-class scandium deposit, though geological confidence is limited to the Inferred category. - Positive factor: Massive scale increase - Positive factor: High grade for scandium - Negative factor: 100% Inferred category Evidence · text > lifted its inferred scandium mineral resource estimate to 946Mt at 50.1ppm scandium, containing 47,357t of scandium metal, at a 25ppm cut-off ### Fact 2 [Link to this fact](https://atlas-staging.minestarters.com/news/mount-ridley-trumpets-world-s-largest-scandium-resource--4ead7024-b384-4c0a-8da1-57380fc378fd#fact-resource-facts-1) scandium #### Identity - Commodity: scandium - Ticker: MRD #### Lab - Laboratory: Nagrom #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-08-26T00:00:00.000Z Reasoning: 80% recovery is a strong initial signal for the proprietary process, but the test scale is very low \(bench/lab scale\). - Positive factor: Strong recovery for scandium - Negative factor: Small sample size \(16.8kg\) - Negative factor: Based on historical holes Evidence · text > Initial independent laboratory work at Nagrom on a 16.8kg composite from five historical diamond holes delivered 80% scandium recovery ### Fact 3 [Link to this fact](https://atlas-staging.minestarters.com/news/mount-ridley-trumpets-world-s-largest-scandium-resource--4ead7024-b384-4c0a-8da1-57380fc378fd#fact-resource-facts-2) rare\_earths #### Identity - Commodity: rare\_earths - Ticker: MRD #### Lab - Laboratory: Nagrom #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-08-26T00:00:00.000Z Reasoning: Recoveries of 77-83% for heavy rare earths are promising for a single-circuit process. - Positive factor: Acceptable recovery range Evidence · text > alongside roughly 77-83% recoveries for the principal heavy rare earths tested ### Fact 4 [Link to this fact](https://atlas-staging.minestarters.com/news/mount-ridley-trumpets-world-s-largest-scandium-resource--4ead7024-b384-4c0a-8da1-57380fc378fd#fact-resource-facts-3) gallium #### Identity - Commodity: gallium - Ticker: MRD #### Lab - Laboratory: Nagrom #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-08-26T00:00:00.000Z Reasoning: 56% recovery for gallium is significantly lower than the scandium and REE recoveries. - Negative factor: Relatively low recovery compared to scandium Evidence · text > and about 56% gallium recovery ## How Atlas produces this analysis Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.